CN108557713A - A kind of hydraulic station and fork truck - Google Patents
A kind of hydraulic station and fork truck Download PDFInfo
- Publication number
- CN108557713A CN108557713A CN201810713137.XA CN201810713137A CN108557713A CN 108557713 A CN108557713 A CN 108557713A CN 201810713137 A CN201810713137 A CN 201810713137A CN 108557713 A CN108557713 A CN 108557713A
- Authority
- CN
- China
- Prior art keywords
- oil
- side hydraulic
- fork truck
- oil container
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 86
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 50
- 230000003028 elevating effect Effects 0.000 claims abstract description 18
- 230000008676 import Effects 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000032258 transport Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07504—Accessories, e.g. for towing, charging, locking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Abstract
The invention discloses a kind of hydraulic stations, including left side hydraulic oil container, right side hydraulic oil container, oil pump, multi-way valve, hydraulic steering gear, elevating ram and debugging oil cylinder, the left side hydraulic oil container is conducted with the right side hydraulic oil container and the symmetrical arranged for interval in left and right, the import of the oil pump is connected on the left side hydraulic oil container or the right side hydraulic oil container, the outlet of the oil pump is connected with the main oil inlet of the multi-way valve, the main oil return opening of the multi-way valve is connected with the import of the hydraulic steering gear, the outlet of the hydraulic steering gear is connected with the left side hydraulic oil container or the right side hydraulic oil container, at least two groups work oil inlet and work oil return opening are provided on the multi-way valve, the elevating ram and the debugging oil cylinder different groups of work oil inlets with the multi-way valve respectively, work oil return opening is connected.The present invention also provides a kind of fork trucks.The present invention can either meet elevating ram requirements of one's work, and can meet the needs of debugging cylinder efficient.
Description
Technical field
The present invention relates to technical field of vehicle, more specifically, more particularly to a kind of hydraulic station and fork truck.
Background technology
Fork truck is one of common carrying vehicle of present people, be member pallet cargo loaded and unloaded, stacking and short distance
It transports, the various wheeled carrying vehicles of weight transport operation.Fork truck plays very important angle in the logistics system of enterprise
Color is the main force in material conveyance equipment, is widely used in harbour, station, airport, goods yard, factory floor, warehouse, circulation
Center and home-delivery center etc., and handling, the transport operation that pallet cargo is carried out in cabin, compartment and container can be entered, it is support
Essential equipment in disk transport, Container Transport.China manufactures fork truck since early 1950s, as China passes through
The material carrying of the fast development of Ji, most of enterprise has had been detached from original artificial carrying, instead with fork truck
Based on conveyorization, therefore, in the past few years, the demand in Chinese fork truck market is all increased with geometry speed every year
It is long.
In the prior art, since the reserves of hydraulic oil container are limited, lead to the pressure oil in hydraulic oil container on conventional fork truck
It is only capable of meeting the driving of the elevating ram for forklift door frame lifting.But fork truck is in actual use, it is often necessary to make
Go to debug other machineries for a mobile hydraulic station, due on conventional fork truck hydraulic station mechanism design limitation,
The driving that often can not effectively realize debugging oil cylinder, to remove effectively to debug other machineries as movable hydraulic station.
Invention content
The technical problem to be solved in the present invention is to provide a kind of hydraulic station, which, can either by its structure design
Meet elevating ram requirements of one's work, and the needs of debugging cylinder efficient can be met.
A kind of hydraulic station, including left side hydraulic oil container, right side hydraulic oil container, oil pump, multi-way valve, hydraulic steering gear, lifting
Oil cylinder and debugging oil cylinder, the left side hydraulic oil container is conducted with the right side hydraulic oil container and the symmetrical arranged for interval in left and right,
The import of the oil pump is connected on the left side hydraulic oil container or the right side hydraulic oil container, the outlet of the oil pump with it is described
The main oil inlet of multi-way valve is connected, and the main oil return opening of the multi-way valve is connected with the import of the hydraulic steering gear, described
The outlet of hydraulic steering gear is connected with the left side hydraulic oil container or the right side hydraulic oil container, is provided on the multi-way valve
At least two groups work oil inlet and work oil return opening, the elevating ram and the debugging oil cylinder respectively with the multi-way valve not
It is connected with group work oil inlet, work oil return opening.
Preferably, the hydraulic steering gear is connected with peripheral hardware bogie.
Preferably, the debugging oil cylinder is provided at least two groups.
The present invention also provides a kind of fork truck, the hydraulic station described in above-mentioned any one is installed on the fork truck, wherein
The fork truck includes car body, and the left side hydraulic oil container is arranged on the left of the car body, and the right side hydraulic oil container is arranged in institute
It states on the right side of car body, the car body front end is provided with door frame, and the elevating ram is connected with the door frame, and the car body tail end is set
It is equipped with clump weight, the fuel tank for fork truck fuel supply is provided on the clump weight.
Preferably, the door frame left and right side is both provided with interior Oil Guide pipeline and outer Oil Guide pipeline, the interior oil guide pipe
Road is connected with independent debugging oil cylinder respectively with the outer Oil Guide pipeline.
Preferably, it is provided with supporting rod between the door frame and the car body.
Preferably, the supporting rod is adjustable support bar.
The beneficial effects of the invention are as follows：The hydraulic station provided by the invention makes the fuel tank of conventional forklift wherein side into
Hydraulic oil container, left side hydraulic oil container be connected with right side hydraulic oil container after be together hydraulic station fuel feeding, and on multi-way valve
Multigroup work oil inlet and work oil return opening are set, to which elevating ram requirements of one's work can either be met, and debugging can be met
The needs of cylinder efficient, to which effectively driving debugging oil cylinder goes to debug other machineries.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
The overall structure diagram for the hydraulic station that Fig. 1 is provided by the embodiment of the present invention 1；
The front view for the fork truck that Fig. 2 is provided by the embodiment of the present invention 2；
The right view for the fork truck that Fig. 3 is provided by the embodiment of the present invention 2.
Specific implementation mode
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, technical solutions in the embodiments of the present application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.
Based on the embodiment in the application, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present application.
In the description of the present invention, it is to be understood that, the instructions such as term " left side ", " right side ", " front end ", " tail end "
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched
It states, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
Embodiment 1：
A kind of specific embodiment of hydraulic station of the present invention is provided referring to Fig. 1, Fig. 1, wherein Fig. 1 is the embodiment of the present invention 1
The overall structure diagram of the hydraulic station provided.
As shown in Figure 1, hydraulic station provided in this embodiment includes left side hydraulic oil container 1, right side hydraulic oil container 2, oil
Pump 3, multi-way valve 4, hydraulic steering gear 5, elevating ram 6 and debugging oil cylinder 7.
In the present embodiment, left side hydraulic oil container 1 is conducted with right side hydraulic oil container 2 and the symmetrical arranged for interval in left and right.It is left
Storage of the side hydraulic oil container 1 with right side hydraulic oil container 2 for pressure oil needed for hydraulic station.
The import of oil pump 3 is connected on the left side hydraulic oil container 1 or the right side hydraulic oil container 2, and the oil pump 3 goes out
Mouth is connected with the main oil inlet of the multi-way valve 4.Oil pump 3 is used to provide power output to the flowing of pressure oil in hydraulic station.
The main oil return opening of multi-way valve 4 is connected with the import of the hydraulic steering gear 5, the outlet of the hydraulic steering gear 5
It is connected with the left side hydraulic oil container 1 or the right side hydraulic oil container 2, at least two groups work is provided on the multi-way valve 4
Oil inlet and work oil return opening, the elevating ram 6 and the debugging oil cylinder 7 different groups of work with the multi-way valve 4 respectively
Oil inlet, work oil return opening are connected.
In the present solution, break-make of the multi-way valve 4 for multichannel fluid controls.Hydraulic steering gear 5 is used for the control of fluid flow.
Elevating ram 6 is used for the control of door frame lifting action.Oil cylinder 7 is debugged for required maintenance tool action in fork truck maintenance process
Control.
In the present embodiment, multi-way valve 4 is composed of five valve blocks, thus to manipulate the movement of five executive components,
Wherein a piece of valve block is connected with elevating ram 6, and four valve bodies in addition are connected with four debugging oil cylinders 7, that is to say, that this
The multi-way valve 4 of embodiment can control an elevating ram 6 and four debugging oil cylinders 7 simultaneously.It is of course also possible to suitably increase or
Reduce the quantity of valve block in multi-way valve 4.
Generally speaking, the hydraulic station provided by the invention has made the fuel tank of conventional forklift wherein side into hydraulic oil
Case, left side hydraulic oil container be connected with right side hydraulic oil container after be hydraulic station fuel feeding together, and be arranged on multi-way valve multigroup
Work oil inlet and work oil return opening, to meet elevating ram requirements of one's work, and can meet debugging cylinder efficient
Needs.
In the present embodiment, to further facilitate the hydraulic control of peripheral hardware bogie 8, it is preferable that the hydraulic steering gear 5 with
Peripheral hardware bogie 8 is connected.
In the present embodiment, it is contemplated that need the maintenance tool driven relatively more, it is preferable that the debugging oil cylinder 7 is provided with
At least two groups.
Embodiment 2：
Referring to Fig. 2 and Fig. 3, Fig. 2 and Fig. 3 provide a kind of specific embodiment of fork truck of the present invention, wherein Fig. 2 is this hair
The front view for the fork truck that bright embodiment 2 is provided；The right view for the fork truck that Fig. 3 is provided by the embodiment of the present invention 2.
Hydraulic station described in above-mentioned any one is installed, wherein the fork truck includes on fork truck provided in this embodiment
Car body 11, the setting of left side hydraulic oil container 1 are arranged in 11 left side of the car body, the right side hydraulic oil container 2 in the car body
11 right sides, 11 front end of the car body are provided with door frame 12, and the elevating ram 6 is connected with the door frame 12, the car body 11
Tail end is provided with clump weight 13, and the fuel tank 14 for fork truck fuel supply is provided on the clump weight 13.
In the present embodiment, eye is regarded for further expansion driver, prevents the Oil Guide pipeline influence of connection debugging oil cylinder 7 from driving
The sight for the person of sailing, it is preferable that 12 left and right side of the door frame is both provided with interior Oil Guide pipeline 15 and outer Oil Guide pipeline 16, described
Interior Oil Guide pipeline 15 is connected with independent debugging oil cylinder 7 respectively with the outer Oil Guide pipeline 16.
Specifically, 15, two groups of outer Oil Guide pipelines 16 of Oil Guide pipeline and four tune in two groups are provided in the present embodiment altogether
Formation testing cylinder 7.Specifically, pressure measurement pressure gauge and related oil pipe and connector can also be separately configured, in order to detect and adjust
Hydraulic system pressure.
In the present embodiment, the support to further facilitate door frame 12 is fixed, while reducing unnecessary pressure oil output, excellent
Selection of land is provided with adjustable support bar between the door frame 12 and the car body 11.
Specifically, scheme provided by the invention eliminates the mode of conventional forklift door frame setting dump ram, door frame adjustment
After perpendicular to the ground, support is fixed using adjustable support bar.Door frame is small perpendicular to ground surface error in specific installation and debugging
In ± 0.5 °, support strength is enough, reliable and stable.
Fork truck provided by the invention has the advantages that compared with conventional forklift：
1, it also regard the fuel tank on the original left side of conventional forklift as hydraulic oil container, is then additionally arranged on clump weight and is used for
The total measurement (volume) of hydraulic oil container has been significantly greatly increased while ensureing fork truck fuel supply in the fuel tank of fork truck fuel supply；
2, the dump ram being arranged on conventional forklift door frame is changed to adjustable support bar and support is fixed, ensure door
While frame stablizes installation, unnecessary pressure oil output can be effectively reduced；
3, the debugging pipeline on forklift door frame provided by the invention innovatively uses the interior Oil Guide of inside and outside rebuilding
Pipeline and outer Oil Guide pipeline, have been significantly expanded the visual field.
4, multi-way valve is directly connected to user and debugs oil cylinder by fork truck provided by the invention, can greatly facilitate the inspection of fork truck
It repaiies.
A kind of hydraulic station provided by the present invention and fork truck are described in detail above.It is used herein specifically a
Principle and implementation of the present invention are described for example, and the explanation of above example is only intended to help to understand the present invention's
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention
Protection domain in.
Claims (7)
1. a kind of hydraulic station, which is characterized in that including left side hydraulic oil container, right side hydraulic oil container, oil pump, multi-way valve, hydraulic rotation
To device, elevating ram and debugging oil cylinder, the left side hydraulic oil container is conducted with the right side hydraulic oil container and left and right is symmetrical
The import of arranged for interval, the oil pump is connected on the left side hydraulic oil container or the right side hydraulic oil container, the oil pump
Outlet is connected with the main oil inlet of the multi-way valve, the main oil return opening of the multi-way valve and the import phase of the hydraulic steering gear
Connection, the outlet of the hydraulic steering gear are connected with the left side hydraulic oil container or the right side hydraulic oil container, the multichannel
Be provided at least two groups work oil inlet and work oil return opening on valve, the elevating ram and the debugging oil cylinder respectively with it is described
Different group work oil inlets, the work oil return opening of multi-way valve are connected.
2. hydraulic station according to claim 1, which is characterized in that the hydraulic steering gear is connected with peripheral hardware bogie.
3. hydraulic station according to claim 1, which is characterized in that the debugging oil cylinder is provided at least two groups.
4. a kind of fork truck, which is characterized in that be equipped with the claims 1 on the fork truck to claim 3 any one institute
The hydraulic station stated, wherein the fork truck includes car body, and the left side hydraulic oil container is arranged on the left of the car body, the right side
Hydraulic oil container is arranged on the right side of the car body, and the car body front end is provided with door frame, and the elevating ram is connected with the door frame
It connects, the car body tail end is provided with clump weight, and the fuel tank for fork truck fuel supply is provided on the clump weight.
5. fork truck according to claim 4, which is characterized in that the door frame left and right side is both provided with interior Oil Guide pipeline
With outer Oil Guide pipeline, the interior Oil Guide pipeline is connected with independent debugging oil cylinder respectively with the outer Oil Guide pipeline.
6. fork truck according to claim 4, which is characterized in that be provided with supporting rod between the door frame and the car body.
7. fork truck according to claim 6, which is characterized in that the supporting rod is adjustable support bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713137.XA CN108557713A (en) | 2018-06-29 | 2018-06-29 | A kind of hydraulic station and fork truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713137.XA CN108557713A (en) | 2018-06-29 | 2018-06-29 | A kind of hydraulic station and fork truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108557713A true CN108557713A (en) | 2018-09-21 |
Family
ID=63555027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810713137.XA Pending CN108557713A (en) | 2018-06-29 | 2018-06-29 | A kind of hydraulic station and fork truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108557713A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209305A (en) * | 2020-10-30 | 2021-01-12 | 合力工业车辆（上海）有限公司 | Hydraulic system of storage forklift |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0291796U (en) * | 1989-01-06 | 1990-07-20 | ||
| KR20090067386A (en) * | 2007-12-21 | 2009-06-25 | 두산인프라코어 주식회사 | Fork lift |
| CN201962040U (en) * | 2011-02-21 | 2011-09-07 | 安徽合力股份有限公司 | Forklift hydraulic system with functions of priority and unloading |
| CN203820383U (en) * | 2014-04-24 | 2014-09-10 | 浙江华和叉车有限公司 | Carrying forklift |
| US20150082783A1 (en) * | 2012-04-28 | 2015-03-26 | Anhui Heli Co., Ltd | Energy regeneration type forklift hydraulic system |
| CN104763696A (en) * | 2015-04-16 | 2015-07-08 | 上海市闸北区物流工程技术研究所 | Electronic control hydraulic driving system used for industrial vehicles |
| CN105621322A (en) * | 2016-02-24 | 2016-06-01 | 上海市闸北区物流工程技术研究所 | Full-hydraulic electric stacking forklift |
| US20160245313A1 (en) * | 2013-11-29 | 2016-08-25 | Byd Company Limited | Forklift, hydraulic cylinder assembly and hydraulic device thereof |
| CN206142762U (en) * | 2016-08-27 | 2017-05-03 | 安徽合力股份有限公司 | A two oil tank device for large -tonnage electric fork -lift |
| CN106904558A (en) * | 2017-04-18 | 2017-06-30 | 安徽合力股份有限公司 | A kind of heavy forklift sling hydraulic pressure control system |
| CN208586025U (en) * | 2018-06-29 | 2019-03-08 | 衡阳合力工业车辆有限公司 | A kind of hydraulic station and fork truck |
-
2018
- 2018-06-29 CN CN201810713137.XA patent/CN108557713A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0291796U (en) * | 1989-01-06 | 1990-07-20 | ||
| KR20090067386A (en) * | 2007-12-21 | 2009-06-25 | 두산인프라코어 주식회사 | Fork lift |
| CN201962040U (en) * | 2011-02-21 | 2011-09-07 | 安徽合力股份有限公司 | Forklift hydraulic system with functions of priority and unloading |
| US20150082783A1 (en) * | 2012-04-28 | 2015-03-26 | Anhui Heli Co., Ltd | Energy regeneration type forklift hydraulic system |
| US20160245313A1 (en) * | 2013-11-29 | 2016-08-25 | Byd Company Limited | Forklift, hydraulic cylinder assembly and hydraulic device thereof |
| CN203820383U (en) * | 2014-04-24 | 2014-09-10 | 浙江华和叉车有限公司 | Carrying forklift |
| CN104763696A (en) * | 2015-04-16 | 2015-07-08 | 上海市闸北区物流工程技术研究所 | Electronic control hydraulic driving system used for industrial vehicles |
| CN105621322A (en) * | 2016-02-24 | 2016-06-01 | 上海市闸北区物流工程技术研究所 | Full-hydraulic electric stacking forklift |
| CN206142762U (en) * | 2016-08-27 | 2017-05-03 | 安徽合力股份有限公司 | A two oil tank device for large -tonnage electric fork -lift |
| CN106904558A (en) * | 2017-04-18 | 2017-06-30 | 安徽合力股份有限公司 | A kind of heavy forklift sling hydraulic pressure control system |
| CN208586025U (en) * | 2018-06-29 | 2019-03-08 | 衡阳合力工业车辆有限公司 | A kind of hydraulic station and fork truck |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209305A (en) * | 2020-10-30 | 2021-01-12 | 合力工业车辆（上海）有限公司 | Hydraulic system of storage forklift |
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